Stock Boost Of R32

[BenSm]

im trying to find the stock boost for a stock r32. iv heard 10psi, 8, and 7psi. very confused. im running 10psi on my fully stock r32 but dont know if its been played with or the acutator had been changed by the previous owner. it hasnt got a boost T, boost controller anything.

Its a Gts-t r32 1993 skyline.

Thanks.

Edited August 9, 2010 by BenSm

[paulr33]

i've got the notes at home straight from the nissan service manual, the actuator is rated to open at 0.80kgcm2 to 0.85kgcm2 from memory

so the average is 0.82kgcm2 which from memory is just on 12psi

ill post up the official notes from the service manual tonight

[Dose Pipe Sutututu]

Stock RB20DET actuator is rated at 10PSI

I'm running that on my HKS 2535 and tensioned it mum together so it's at 12PSI when connected straight without a boost controlling device.

[BenSm]

sweet, Thanks for your replies. atleast its around what im running, it spikes to 13 so i try not to put the foot down to hard when it does this. When i slowly press down the accelerator it spikes to 13 but when i go flat stick curry it site perfectly on 10psi.

[(OO)SKYLINE(OO)]

i've got the notes at home straight from the nissan service manual, the actuator is rated to open at 0.80kgcm2 to 0.85kgcm2 from memory

so the average is 0.82kgcm2 which from memory is just on 12psi

ill post up the official notes from the service manual tonight

Please do Paul.

Would be an interesting read coming from Nissan.

[paulr33]

yep will do

ive got

HR32

BCNR33

ECR33

i need

ER34

BNR34

if someone has the service manals for ER34 and BNR34 can you please check and show me what it is

im lookuing for the section that show how to test and diagnaose the actuator not working

it is usually worded like;

to test the turbocharger wastegate pressure control connect a pressure vessel guage to the diaphram and blow compressed air to 0.80kgcm2 until the actuator rod beings to move.

the actuator rod must move at the minimum required pressure

[paulr33]

mythbusters ahoy!

Use the air gun to blow compressed air approx A ~ B kgcm2 into the hose and make sure the swing valve controller rod operates.

where

HR32 - A = 0.8 and B = 0.9 kgcm2 which is 0.85kgcm2 (average) which is 12.08 psi

BNR32 A = 0.7 and B = 0.8kgmc2 which is 0.75kgcm2 (average) which is 10.66 psi

ECR33 manual is 385mmhg which is 7.4446 psi

ECR33 auto is 270mmhg which is 5.220 psi

BCNR33 A = 0.79kgcm2 and B = 0.85kgc2m which is 0.82kgcm2 (average) which is 11.6 psi

if someone can find ER34/BNR34 please let me know

[paulr33]

the nissan spec manual is bang on - for HR32

Use the air gun to blow compressed air approx 0.8 ~ 0.9 kgcm/2 into the hose and make sure the swing controller rod operates

so the minimum boost on HR32 is 0.8kgcm2 which is 11.3PSI and the high end of the minimum is 0.90kgcm2 which is 12.8PSI

so anywhere within those specs is acceptable to nissan and the factory specs. this is why i quote it as 12psi, as its the average in the middle

[GTRPowa]

Damn Paul, always got the good info on you.

[Duncan]

I'd love to see some official nissan doco on the r32 n1 model if anyone has it. we use 0.8 bar = 12psi as maximum boost based on the workshop manual as posted above.

[paulr33]

yep keen for ER34/BNR34 also

[floger70]

My stock gtst rb20det was running 6.5 psi on stock ecu. now its turned to 13 on a boost controller but i think 6.5-7 is stock

[bubba]

My stock gtst rb20det was running 6.5 psi on stock ecu. now its turned to 13 on a boost controller but i think 6.5-7 is stock

Sounds like an R33 actuator

[(OO)SKYLINE(OO)]

mythbusters ahoy!

where

HR32 - A = 0.8 and B = 0.9 kgcm2 which is 0.85kgcm2 (average) which is 12.08 psi

BNR32 A = 0.7 and B = 0.8kgmc2 which is 0.75kgcm2 (average) which is 10.66 psi

ECR33 manual is 385mmhg which is 7.4446 psi

ECR33 auto is 270mmhg which is 5.220 psi

BCNR33 A = 0.79kgcm2 and B = 0.85kgc2m which is 0.82kgcm2 (average) which is 11.6 psi

if someone can find ER34/BNR34 please let me know

Thanks a lot Paul!

That confirms I was right with my conversion on my stock boost pressure.

[(OO)SKYLINE(OO)]

yep keen for ER34/BNR34 also

I just downloaded the Work Shop Manuall for the R34.

Would that help?

It's about 230 pages.

[paulr33]

yep that's prefect

find the section that shows you how to pull apart the turbocharger

in theree will be a secion on how to test the std actuator, and what pressure it requires to make it open

this is the minimum boost

[R33Matt]

Stock Boost on a R32 Gts-t is 10psi

Stock Boost on a R33 is 5psi and then it goes to 7psi at 4500revs or something....

[paulr33]

how do you figure stock r32 boost is 10psi if the nissan service manual says the minimum opening pressure for the actuator is 11.3 psi?

i just don't get it

id say if you are seeing 10 psi

your actuator is faulty

you have a pressure leak

inefficient intercooler

inaccurate guage

or guess reading

it is important to note, that the service manual says that applying 11.3 psi pressure at the actuator will make it move and thus open the wastegate

it does NOT specify that you will get 11.3 psi at the back of the plenum, so if you see less boost than 11.3 and you consider this "std boost" then you have a pressure drop

[(OO)SKYLINE(OO)]

yep that's prefect

find the section that shows you how to pull apart the turbocharger

in theree will be a secion on how to test the std actuator, and what pressure it requires to make it open

this is the minimum boost

Ok, I had a read through, turns out it is the Service Manual which you have on your website.

Seems the "Workshop Manual", ppl claim on the internet is the Service Manual...

I can't seem to find anything on how much boost pressure it runs...

That's probably why your asking to...

Damn annoying.